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  • 1
    Electronic Resource
    Electronic Resource
    Characterization of nanometer scale wear and oxidation of transition metal dichalcogenide lubricants by atomic force microscopy (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 3404-3406 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Atomic force microscopy has been used to characterize wear and oxidation of transition metal dichalcogenide surfaces. Sequential images recorded on molybdenum disulfide (MoS2) and niobium diselenide (NbSe2) surfaces show that wear proceeds at defects, and that MoS2 wears at least five times more slowly than NbSe2. Images of thermally treated MoS2 and NbSe2 further demonstrate that oxidation creates surface defects on both materials. However, for similar oxidation conditions, NbSe2 surfaces show extensive degradation, while MoS2 surfaces only exhibit isolated defects. The implications of these results to understanding the tribological properties of the transition metal dichalcogenides are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105689
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Field-induced surface modification on the atomic scale by scanning tunneling microscopy (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 1528-1530 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Scanning tunneling microscopy has been used to study the modification of tin diselenide (SnSe2) and molybdenum disulfide (MoS2) surfaces in ultrahigh vacuum. We have shown that there are positive bias voltage pulse thresholds that must be exceeded to remove material from the surfaces of SnSe2 and MoS2. The voltage threshold for modification of SnSe2(+1.4 V) is significantly smaller in magnitude than the threshold for modification of MoS2(+3.5 V). These threshold results and tip-sample distance dependence data suggest that modification occurs by field evaporation. Additionally, near threshold pulses create stable atomic sizes defects that can be erased by high voltage scanning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107537
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Single-walled carbon nanotube probes for high-resolution nanostructure imaging (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 73 (1998), S. 3465-3467 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Single-walled carbon nanotube (SWNT) tips have been used to image nanostructures with high resolution. Studies of gold nanocrystal standards showed that SWNT tips provide a significant improvement in lateral resolution with respect to multi-walled nanotube tips and microfabricated Si tips. The nanotube tips were also used to resolve substructure within SWNTs deposited on surfaces. These results suggest that observed 1.5 nm high structures can correspond to several SWNTs aligned in parallel. In addition, SWNT tips exhibited superior resolution compared to conventional tips when imaging biological nanostructures, such as double-stranded DNA. The potential and future challenges of SWNT tips are discussed. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.122798
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    SCANNING TUNNELING MICROSCOPY STUDIES OF THE ONE-DIMENSIONAL ELECTRONIC PROPERTIES OF SINGLE-WALLED CARBON NANOTUBES (2002)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physical Chemistry 53 (2002), S. 201-220 
    Details
    ISSN: 0066-426X
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract Recent developments in scanning tunneling microscopy studies of the electronic properties of single-walled carbon nanotubes are reviewed. A broad range of topics focused on the unique electronic properties of nanotubes are discussed, including (a) the underlying theoretical description of the electronic properties of nanotubes; (b) the roles of finite curvature and broken symmetries in perturbing electronic properties; (c) the unique one-dimensional energy dispersion in nanotubes; (d) the nature of end states; (e) quantum size effects in short tubes; (f) the interactions between local spins and carriers in metallic systems (the Kondo effect); and (g) the atomic structure and electronic properties of intramolecular junctions. The implications of these studies for understanding fundamental one-dimensional physics and future nanotube device applications are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.physchem.53.091801.092924
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  • 5
    Electronic Resource
    Electronic Resource
    Atomic structure and electronic properties of single-walled carbon nanotubes (1998)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 391 (1998), S. 62-64 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Carbon nanotubes are predicted to be metallic or semiconducting depending on their diameter and the helicity of the arrangement of graphitic rings in their walls. Scanning tunnelling microscopy (STM) offers the potential to probe this prediction, as it can resolve simultaneously both atomic ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/34145
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